src/main/java/eu/svjatoslav/sixth/e3d/renderer/raster/shapes/AbstractCoordinateShape.java

   1 /*
   2  * Sixth 3D engine. Author: Svjatoslav Agejenko.
   3  * This project is released under Creative Commons Zero (CC0) license.
   4  */
   5 package eu.svjatoslav.sixth.e3d.renderer.raster.shapes;
   6
   7 import eu.svjatoslav.sixth.e3d.geometry.Point3D;
   8 import eu.svjatoslav.sixth.e3d.gui.RenderingContext;
   9 import eu.svjatoslav.sixth.e3d.math.TransformsStack;
  10 import eu.svjatoslav.sixth.e3d.math.Vertex;
  11 import eu.svjatoslav.sixth.e3d.renderer.raster.RenderAggregator;
  12
  13 import java.util.concurrent.atomic.AtomicInteger;
  14
  15 public abstract class AbstractCoordinateShape extends AbstractShape {
  16
  17     private static final AtomicInteger lastShapeId = new AtomicInteger();
  18     public final int shapeId;
  19     public final Vertex[] coordinates;
  20     public double onScreenZ;
  21
  22     public AbstractCoordinateShape(final int pointsCount) {
  23         coordinates = new Vertex[pointsCount];
  24         for (int i = 0; i < pointsCount; i++)
  25             coordinates[i] = new Vertex();
  26
  27         shapeId = lastShapeId.getAndIncrement();
  28     }
  29
  30     public AbstractCoordinateShape(final Point3D... vertexes) {
  31         coordinates = new Vertex[vertexes.length];
  32
  33         for (int i = 0; i < vertexes.length; i++)
  34             coordinates[i] = new Vertex(vertexes[i]);
  35
  36         shapeId = lastShapeId.getAndIncrement();
  37     }
  38
  39     public double getZ() {
  40         return onScreenZ;
  41     }
  42
  43     public abstract void paint(RenderingContext renderBuffer);
  44
  45     @Override
  46     public void transform(final TransformsStack transforms,
  47                           final RenderAggregator aggregator,
  48                           final RenderingContext renderingContext) {
  49
  50         double accumulatedZ = 0;
  51         boolean paint = true;
  52
  53         for (final Vertex geometryPoint : coordinates) {
  54             geometryPoint.calculateLocationRelativeToViewer(transforms, renderingContext);
  55
  56             accumulatedZ += geometryPoint.transformedCoordinate.z;
  57
  58             if (!geometryPoint.transformedCoordinate.isVisible())
  59                 paint = false;
  60         }
  61
  62         if (paint) {
  63             onScreenZ = accumulatedZ / coordinates.length;
  64             aggregator.queueShapeForRendering(this);
  65         }
  66     }
  67
  68 }